English-language-pack.ff23.kuyhaa.7z ●

: The compatibility marker. This typically targets a version "23" release of a major application, a specific gaming engine build, or software distributions (such as older Mozilla Firefox configurations or specialized design tools).

The manifest file needs to be renamed to match the language code. Since this is an English pack, rename chrome.manifest to en-US.manifest . English-Language-Pack.FF23.kuyhAa.7z

Some applications will not recognize new languages automatically and require an manual configuration edit: : The compatibility marker

: Select 7-Zip > Extract Here or Extract to "English-Language-Pack.FF23.kuyhAa" . a specific gaming engine build